首页 | 本学科首页   官方微博 | 高级检索  
     


Codium fragile: rhizomatous growth in the Zostera thief of eastern Canada
Authors:David?J.?Garbary  author-information"  >  author-information__contact u-icon-before"  >  mailto:dgarbary@stfx.ca"   title="  dgarbary@stfx.ca"   itemprop="  email"   data-track="  click"   data-track-action="  Email author"   data-track-label="  "  >Email author,Sarah?J.?Fraser,Charlene?Hubbard,Kwang?Young?Kim
Affiliation:(1) Department of Biology, St. Francis Xavier University, Antigonish, Nova Scotia, B2G 2W5, Canada;(2) Department of Oceanography, Chonnam National University, 500-757 Kwangju, Korea
Abstract:A rhizomatous growth form of Codium fragile is described for the first time. Plants were collected in the Gulf of St. Lawrence in estuaries dominated by Zostera marina. Rhizomatous plants developed from propagules of whole plants that settled horizontally. Horizontal axes of C. fragile were up to 1 m long in plants collected in situ. Plants developed several to dozens of erect axes at right angle to the base. Horizontal growth of up to 0.2 m was found in field experiments where fragments were tied to plastic mesh and left in situ for 4 months. The unconsolidated filaments at the base of C. fragile often wrapped around the rhizomes of Z. marina and up to five separate attachment sites to eelgrass were found in single plants of C. fragile. In four estuaries, 57–100% of Codium plants with identifiable substratum were attached to shoots and rhizomes of Z. marina. The rhizomatous growth form was found in plants identified as C. fragile ssp. tomentosoides (Nova Scotia and Prince Edward Island) and C. fragile ssp. atlanticum (Prince Edward Island), suggesting that this is a phenotypic response to growth in soft bottom environments.Communicated by K Lüning
Keywords:Codium fragile  Eelgrass  Estuaries  Invasive algae  Zostera marina
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号